Question about Smagorinsky mixing coefficients

General scientific issues regarding ROMS

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dylanrs617
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Question about Smagorinsky mixing coefficients

#1 Unread post by dylanrs617 »

Hi All,

I'm doing some experiments with Smagorinsky viscosity/diffusion applied biharmonically along geopotential surfaces to explore its impacts on numerical mixing. In hmixing.F, I see that Bsmag is controlled by PecletCoef, which is equal to 1/12. Where does the 1/12 come from? It's unclear to me from Smagorinsky (1963) and Griffies and Hallberg (2000).

Thanks,
Dylan

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